Carton



Feb. 23, 1954 F, H, sTowll-Ts 27,670,128

CARTON Filed Aug. l5, 1947 2 Sheets-Sheet l INVENTOR.

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Feb. 23, 1954 F. H. sTowrr-rs 2,670,128

CARTON Filed Aug. l5, 1947 2 Sheets-Sheer!"I 2 INVENTOR.

Patented Feb. 23, 1954 CARTDN Frank H. Stowitts, Battle Creek, Mich., assignor to Michigan Carton Company, Battle Creek,

Mich.

Application August 15, 1947, Serial N o. 7 68,886

3 Claims. (Cl. 229-38) This invention relates to improvements in cartons or containers. f

The main objects of the invention are:

First, to provide a container which may be effectively closed on a sealing machine, even when filled to capacity or when the contents are such as to yield under pressure.

Second, to provide a carton for food products and the like having end closures which effectively prevent the escape or sifting of the contents consisting of fine particles through the joints of the closure.

Third, to provide a closure which serves to effectively support the walls against bulging, thus resulting in a neat, attractive appearance as well as effective closure.

Fourth, to provide a closure having overlapping flaps so disposed that they may be readily glued to each other in such manner as to eliminate or greatly reduce the possibility of the contents of the carton coming in contact with the glue.

Other objects pertaining to details and economies of the invention will definitely appear from the description to follow. The invention is defined in the claims.

'A structure embodying the features of the invention is clearly illustrated in the accompanying drawing in which:

Fig. 1 is a perspective view of a carton embodying my invention showing the upper end closure partially closed and showing the lower end closure in full lines closed and in broken lines open, the front wall being broken away to show details of structure 'of the lower end closure.

Fig. 2 is an enlarged fragmentary perspective View illustrating a step in the closing of the carton.

Fig. 3 is a top plan view of the carton showing an inner closure member in closed position, and the intermediate and outer closure members in open position.

Fig. 4 is an enlarged detail fragmentary view in section on the line 4 4 of Fig. 1 showing the closure members in closed or sealing position.

Fig. 5 is an enlarged detail fragmentary view in section on the line 5 5 of Fig. 1 showing the closure members in closed or sealing position.

Fig. 6 is a side View of the carton showing the flaps of the outer closure members at the upper and lower ends of the carton folded over and sealed to the front wall of the carton.

Fig. 7 is an enlarged fragmentary perspective view of the interior corner structure of the carton.

Fig. 8 is a plan view of the integral blank from which the carton is formed.

' 2 It will be understood that I use the terms front, rear and side walls in the specification and claims for convenience in description and A defining the invention.

My improved carton is formed of suitable container or carton stock such as is commonly used for food packages, although it will be understood that the stock is varied considerably for the particular kind of merchandise for which the carton is intended. The front wall I, rear wall 2 and side walls 3 are in alinement in the blank and are hingedly joined by folding scores 4 as is also the glue flap 5 which extends from one end of the blank and is adhesively secured to the other end ofthe blank, the glue nap being integral with one of the end walls 3 in the embodiment illustrated.

In the carton illustrated the walls are desirably 1 1 matically closed while they are supported on a form. The end closure members are joined to the walls by hinging scores 5, EI and 52, hereinafter more fully described.

The closure member I of the front wall I is provided at its swinging edge with a sealing flap 8 having hinged connection 9 to the closure member l. The hinged connection .9 comprises arelatively wide score I0 having intermediate the edges II and III thereof a line of incisions I2 terminating short of the ends of the score I0 as shown in Figs. 1, 2 and 3. The incisions I2 extend entirely through the material and the score I0 is disposed on the inner side of the hinge connection to facilitate folding the flap 8 flatly against the closure I as shown in Fig. 5. The sealing flap 8 is cut away providing the beveled end edges I3 intersecting at I4 the edge II of the score I0 in spaced relation from the ends of the score I0, and the closure member l is cut away outwardly from approximately the outer edge I I of the score I0, thereby providing the end portions I5 in substantial alinement with the hinges 9 for a purpose hereinafter described.

The closure member It of the rear wall 2 is provided with a sealing flap Il hingedly connected to the swinging edge of the member by a score I8. The closure member I6 and its sealing flap Il extend the full width of the rear wall 2. The closure members l and I6 vcorrespond in dimensions to the cross sectional dimensions of the and outer closure members I and I6 when thef;r

carton is completely closed.

In closing, the inner closure member 'I is iirst turned inwardly with its sealing-snap 8 lying uponF the inner side of the outer.;closuremembersi6e.15-

as shown in Fig. 3, or what constitutes the inner side of the outer closure member. I6 whenvthe.

outer member is in closed position, although in the sealing machine the member I6 wouldcomav monly be in a horizontal position at the time of sealing thediaptheretdby .thefadhesive The intermediateclosure members I 9 .on fthe .side Walls 3 r areV4 then .folded f. inwardlyx4 and. secured to. the closure member 'IV by the adhesive 2I as shown in Eig. .2, and thereafter theiouter closure. member` I6.is.,folded upon andisecuredto4 the,inter` mediateblosure members, I9` by theV adhesive23.y to ...the outer` face `of. the. front,4 wall I as shown? in.Fg, .4;.

Also. inA thisembodiment the front :edges-.o the.A intermediateclosure members. I9.` are beveleckor.- inclined inwardly. at 24 vto permit the. irontl edge. portion of! theaouter. closure. member. Iii-to be secured. by the adhesive. 25to'the-iorward porfav tion., 26f Oithednner. closure member l. forwardlyv of .the inclined or. beveled edges. 2dr of.. the: inter mediate closure members. However, the inter-- mediate, closurefmembers have portions Z'I- the fulLWidtho the-carton which abuts the hinge:

joint; I8l ofiiapextension, Ilwhen the extension.

is -foldedver and .adhesively secured ;to the front wall... Thiseectively closes, theiront. corners. ofthe carton.

The. rear. edges 28 of the intermediateclosure memberslearerecessed vat 29'v to receive theseali ing; flap. Baand` to permit -the same.. toA be folded. bacleinto. abuttingt relation with thefinner closure. 1 as shown in Fig. 5. The portions 4Stof-the rearedges 28adjacent.the rear.corners Otthe carton extendfwhen, the carton. isy closed in,v parallel superimposed. relation to. the` portions. I 5- at thef ends.oi.'the,hinge joints-9 as. shown inA Fig: 4i, This .facilitates the. closure members being; folded-.- intoa. very compact-.flatr relation. to each .other andLefiectivel'y seals therear. corners ofthe carv ton.. againstleakage.

The hinge joint.6.of\ the inner. closuremember.

'I .to:the.front.wall. I is disposed inwardlyofthe: hingedoints, Bl l of the intermediate closurey mem bers..Ieto.the sidewalls 3 andthe hinge jointsv 6Il are,disposed-,invvardly ofthe hingejointsiiZn oi'tlie outer closure member It to the. rear wall..

closing the corners'of the carton againstleakage.

andx provides a. neatI and attractivev appearance tothe carton.

Thesealing. flap 5. is.. integrally connected.by.y hingejoint 3l. to one of the side walls. 3..and istv adhesively secured .to the inner. sideof. the iront.

Wall"I. Thisflap is provided,Wthintegralex?. tensions 32T hingedlyl connected. at 33Ty to.-v the. ends.

4 of the nap as shown in Figs. 7 and 8. These extensions are adhesively secured to the inner sides of the inner closure members 8, and when these closure members are closed the outer edges of the extensions abut a side wall 3 closely adjacent to the hinge connection 6I of the inner closure member to the side wall. This assists in preventmgthescapenf the'contentsiromithe iront corners... I

When the end closure members are in closed position and adhesively secured together and the sealing aps 8 and I'i are adhesively secured as above described they result in a closure which p reventssV escape? off, the contents from or sifting of: themontentsithrough the closure. The edge portions 3i) of theinterm-ediate closure members I9 beingdn parallelsuperimposed relation to the portions I5`at` thesends of the hinge joint 9 prevents escape of the contents at the rear corners oi' the carton. The front sealing iiap I1 extendingf the.;.full vvidthofy the carton..with,.,its

hinge connection I8 in abuttingrelation,toithei.

edge portions 2.A oithel intermediate,l closure membersfprevents escapeof the-contents atthe front-cornered.A thecar-ton. Also vertically.,off#v setting:.the.hinge.joints 6, 6I and 62 ofthe closure;t members as hereinbefore described; permits the closurezmembers `to be =folded.into,very, closeand tight: superimposed relation, to. each othen at,C

both-.fthe front andi rear cornersof the canton. tofprevent .leakagefati said corners.,

An advantage of sealing the ap altos thm underside oik the outer'- closurey memberisthat it` greatly assists .f in preventing; the; .contenter (1f-,gv the-.carton .contactingthefglue or. adhesive the,

subsequent sealing operations. Aafurther.; ads, vantage' of sealing; lthe flap: 8; to. therr underside ofi. the. outer closuresmemberx i6; is `,that.theixlnerr closure. member l` isf eiiectivelyf supported .wit/hf out regardto the contents-.sothat the.;intermedi-fl1 ate andiouter; closure'members mayf-be folded closed position and adhesively secured inithat position, thefinne;` closure-member being capable.;A

ofisupporting the thrust incidentto ,such closingg; and sealing. This also results ina more feiecf tivef sealing oil thel closures memberstogether as they ane-supportedi andcannotspring; awayzflomt each other, both during and the setting of the-,adehesive: The-,outer sea-ling iiapv ITI when sealedf to the-frontf-Wall l inadditionto i prevent-ing; escape;

oil the contents through'- thehfront) cornersthaa.-

the 'iurthen advantages ci facilitating; retentioni.

embody, or. adapt .my invention asmayberdesired.

Having-- thus described myy inwantion` Whatsl.- claimv as. netvand desire to secure; by Letters Patent.- is z.

l. oartoncomprising front, rear. andt-side-.A

Wallshaving end closure members-'hingedly ccnnected; thereto at one. end of. theV ca-rton-L the olor. I suremember. of-` the-.iront Wallconstituting am inner closure member,.thefclosuremember ofytheirear wallconstitutingan outer= closuremember, the, closure members; cil the sidewalls? constitute ing:l intermediate closure; Inemilers;A the hinged connection of the inner closure; memberrtdtzthesi front wall being disposed inwardly of the hinged connections of the intermediate closure members to the side walls, said hinged connections of the intermediate closure members being disposed inwardly of the hinged connection of the outer closure member to the rear wall, said inner and outer closure members being of dimensions substantially corresponding to the cross sectional dimension of the carton, said inner closure member having a sealing iiap extension on the swinging edge thereof, said flap extensions being disposed inwardly of the ends of said swinging edge and having a hinged connection to said swinging edge and having an adhesive connection to the inner side of the outer closure member and lying flatly against the inner closure member when the outer closure member is in closed position, said hinged connection comprising a score and a line of incisions intermediate the side edges of the score to facilitate folding the extension iiap flatly against the inner closure member, said intermediate closure members being recessed at the rear thereof to permit the extension flap throughout the length thereof to lie iiatly against the inner closure member.

2. A carton comprising front, rear and side Walls having end closure members hingedly connected thereto at one end of the carton, the closure member of the front wall constituting an inner closure member, the closure member of the rear wall constituting an outer closure member. the closure members of the side walls constituting intermediate closure members, said inner and outer closure members being of dimensions substantially corresponding to the cross sectional dimension of the carton, said inner closure member having a sealing flap extension on the swinging edge thereof, said flap extension being dis- 6 outer closure member is in closed position, said hinged connection comprising a score and a line of incisions intermediate the side edges of the score to facilitate folding the extension flap flatly against the inner closure member, said intermediate closure members being recessed at the rear thereof to permit the extension flap throughout the length thereof to lie atly against the inner closure member.

3. A carton comprising front, rear and side walls having end closure members hingedly connected thereto at one end of the carton, the closure member of the front wall constituting an inner closure member, the closure member of the rear wall constituting an outer closure member, the closure members of the side walls constituting intermediate closure members, said inner and outer closure members being of dimensions substantially corresponding to the cross sectional dimension of the carton, said inner closure member having a sealing flap extension on the swinging edge thereof, said flap extension being disposed inwardly of the ends of said swinging edge and having a hinged connection to said swinging edge and having' an adhesive connection to the inner side of the outer closure member 'and lying flatly against the inner closure member when the outer closure member is in closed position, said intermediate closure members being recessed at the rear thereof to permit the extension flap throughout the length thereof to lie atly against the inner closure member.

` FRANK H. STOWIIIS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,206,839 Gruenberg Dec. 5, '1916 1,699,008 Miller Jan. 15, 1929 1,863,260 Van Buren June 14, 1932 1,987,647 Wellman Jan. 15, 1935 2,063,645 Ware Dec. 8, 1936 2,403,047 Buttery July 2, 1946 

